Evidence map›Paper›PMID 17919492›Full record

ArticleGastroenterology2007

Reciprocal effects of micro-RNA-122 on expression of heme oxygenase-1 and hepatitis C virus genes in human hepatocytes.

Ying Shan, Jianyu Zheng, Richard W Lambrecht, Herbert L Bonkovsky

Open access · greenAbstract read
In one paragraph

Article in Gastroenterology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
6.7field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

71 citing papers in PubMed, 164 citations in OpenAlex.

  1. Article
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  17. Oxidative stress response and Nrf2 signaling in aging.Free radical biology & medicine · 2015
    Review
  18. Article
  19. Review
  20. Article

11 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Ying ShanDepartment of Medicine, University of Connecticut Health Center, Farmington, Connecticut, USA. ying.shan@umassmed.edu
Jianyu Zheng
Richard W Lambrecht
Herbert L Bonkovsky
Connecticut Center for Primary Care · USUConn Health · US

Funding

REGULATION OF HEPATIC HEME METABOLISMR01DK038825 · NIDDK · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI BONKOVSKY, HERBERT L · 1987 to 2009
$3.4M
Research Network for Drug-Induced Liver DiseaseU01DK065193 · NIDDK · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI PROTIVA, PETR · 2003 to 2007
$1.2M
HEPATITIS C CLINICAL TRIAL-CLINICAL CENTERSN01DK092326 · NIDDK · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI BONKOVSKY, HERBERT L · 1999 to 2000
$872k
NIDDK NIH HHS N0-1 DK92326NIDDK NIH HHS R01 DK038825NIDDK NIH HHS R01-DK38825NIDDK NIH HHS U0-1 DK065193NIDDK NIH HHS U01 DK065193NLM NIH HHS N01 DK092326
6 · The paper itself

Abstract

BACKGROUND &

aimsHeme oxygenase-1 (HO-1) is an antioxidant defense and key cytoprotective enzyme, which is repressed by Bach1. Micro-RNA-122 (miR-122) is specifically expressed and highly abundant in human liver and required for replication of hepatitis C virus (HCV) RNA. This study was to assess whether a specific miR-122 antagomir down-regulates HCV protein replication and up-regulates HO-1.

methodsWe transfected antagomir of miR-122, 2'-O-methyl-mimic miR-122, or nonspecific control antagomir, into wild-type (WT) Huh-7 cells or Huh-7 stably replicating HCV subgenomic protein core through nonstructural protein 3 of HCV (NS3) (CNS3 replicon cells) or NS3-5B (9-13 replicon cells).

resultsAntagomir of miR-122 reduced the abundance of HCV RNA by 64% in CNS3 and by 84% in 9-13 cells. Transfection with 2'-O-methlyl-mimic miR-122 increased HCV levels up to 2.5-fold. Antagomir of miR-122 also decreased Bach1 and increased HO-1 mRNA levels in CNS3, 9-13, and WT Huh-7 cells. Increasing HO-1 by silencing Bach1 with 50 nmol/L Bach1-short interfering RNA or by treatment with 5 mumol/L cobalt protoporphyrin or heme (known inducers of HO-1) decreased HCV RNA and protein by 50% in HCV replicon cells.

conclusionsDown-regulation of HCV replication using an antagomir targeted to miR-122 is effective, specific, and selective. Increasing HO-1, by silencing the Bach1 gene or by treatment with cobalt protoporphyrin or heme, decreases HCV replication. Thus, miR-122 plays an important role in the regulation of HCV replication and HO-1/Bach1 expression in hepatocytes. Down-regulation of miR-122 and up-regulation of HO-1 may be new strategies for anti-HCV intervention and cytoprotection.

Indexed as

Gene Expression Regulation, ViralAntagomirsBasic-Leucine Zipper Transcription FactorsCell Line, TumorDEAD-box RNA HelicasesEnzyme InductionFanconi Anemia Complementation Group ProteinsHemeHeme Oxygenase-1HepacivirusHepatocytesHumansMicroRNAsNucleoside-TriphosphataseOligonucleotidesProtoporphyrinsantagomir-122AntagomirsBACH1 protein, humanBasic-Leucine Zipper Transcription FactorscobaltiprotoporphyrinDEAD-box RNA HelicasesFanconi Anemia Complementation Group ProteinsHemeHeme Oxygenase-1HMOX1 protein, humanMicroRNAsNS3 protein, hepatitis C virusNucleoside-TriphosphataseOligonucleotidesProtoporphyrinsRNA, MessengerRNA, Small InterferingRNA, ViralSerine EndopeptidasesViral Nonstructural ProteinsViral Proteases

Identifiers

PMID17919492
PMCPMC2128739
OpenAlexW1996867673

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.